EP 0328195 A3 19900307 - PNEUMATIC ELECTRONIC VALVE ACTUATOR
Title (en)
PNEUMATIC ELECTRONIC VALVE ACTUATOR
Publication
Application
Priority
US 15325788 A 19880208
Abstract (en)
[origin: EP0328195A2] A bistable electronically controlled pneumatically powered transducer for use, for example, as a valve mechanism in an internal combustion engine is disclosed. The transducer armature, an engine valve (31), for example, is powered by a pneumatic source and includes pneumatic damping and energy recovery as it nears its destination position. The armature is held in each of its extreme positions by a permanent magnet latching arrangement (39) and is released therefrom to be pneumatically driven to the other extreme position by an electromagnetic arrangement (41) which temporarily neutralizes the permanent magnetic field of the latching arrangement. A multiplicity of engine operating modes are also disclosed including operation of an engine in a six stroke cycle mode, and a unique intake valve timing scheme where the intake valve closure is delayed beyond bottom dead center of its associated cylinder with the delay being greater at lower engine speeds and less at higher engine speeds.
IPC 1-7
IPC 8 full level
F01L 9/02 (2006.01); F01L 9/04 (2006.01); F01L 9/16 (2021.01); F01L 9/20 (2021.01); F01L 13/00 (2006.01); F02D 13/02 (2006.01)
CPC (source: EP KR US)
F01L 9/16 (2021.01 - EP US); F01L 9/20 (2021.01 - EP US); F01L 13/0005 (2013.01 - EP KR US); F02D 13/0215 (2013.01 - EP KR US); F02D 13/0261 (2013.01 - EP KR US); F02D 13/0269 (2013.01 - EP KR US); F01L 2201/00 (2013.01 - EP KR US); F02D 2013/0296 (2013.01 - EP KR US); F02D 2041/001 (2013.01 - EP KR US); Y02T 10/12 (2013.01 - EP US); Y10T 137/86614 (2015.04 - EP US)
Citation (search report)
- DE 421002 C 19251104 - AVIATION LOUIS BREGUET SA
- FR 2133288 A5 19721124 - PENHOET LOIRE ATLAN CHAN
- US 3844528 A 19741029 - MASSIE P
- [X] GB 1303080 A 19730117
- [A] GB 2003979 A 19790321 - BAYERISCHE MOTOREN WERKE AG
- [A] US 4499872 A 19850219 - WARD MICHAEL A V [US], et al
- [X] PATENT ABSTRACTS OF JAPAN, Vol. 11, No. 114 (M-579), April 10, 1987; & JP-A-61 258 927 (K. TOSHIKAZU) 17-11-1986, Abstract.
- [A] AUTOMOTIVE ENGINEERING; Vol. 90, No. 4, April 1982, pages 51-55; Warrendale, US, "Engine load controlled via early intake valve closing".
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
EP 0328195 A2 19890816; EP 0328195 A3 19900307; CA 1314774 C 19930323; JP H01227808 A 19890912; KR 890013399 A 19890923; US 4878464 A 19891107
DOCDB simple family (application)
EP 89200227 A 19890202; CA 589492 A 19890130; JP 2772189 A 19890208; KR 890001404 A 19890208; US 15325788 A 19880208